weak, feeble, frail, fragile, infirm, decrepit mean not strong enough to endure strain, pressure, or strenuous effort. weak applies to deficiency or inferiority in strength or power of any sort.

If you describe someone as weak, you mean that they are not very confident or determined, so that they are often frightened or worried, or easily influenced by other people.

WEAK definition: 1. not physically strong: 2. not strong in character, so that you are not able to make decisions…. Learn more.

Define weak. weak synonyms, weak pronunciation, weak translation, English dictionary definition of weak. not strong; feeble; lacking firmness or force of will: The illness had made her weak.

Weak, decrepit, feeble, weakly imply a lack of strength or of good health. Weak means not physically strong, because of extreme youth, old age, illness, etc.: weak after an attack of fever.

Muscle cells work by detecting a flow of electrical impulses from the brain, which signals them to contract through the release of calcium by the sarcoplasmic reticulum. Fatigue (

The weak force was first postulated by Enrico Fermi in 1933, as that which allows beta decay (i.e. the radioactive emission of a high energy electron) from the atomic nucleus.

WEAK definition: not strong; liable to yield, break, or collapse under pressure or strain; fragile; frail. See examples of weak used in a sentence.

weak definition: lacking physical strength or energy. Check meanings, examples, usage tips, pronunciation, domains, and related words. Discover expressions like "weak tea", "weak link", …

Definition of weak adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.